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Discussion Starter #1 (Edited)
Update 02/28/2020:

Good news! I got a quote from them this morning. As expected, however, it’s not cheap. Regardless, I’m moving forward and will be sending payment shortly. But I would really appreciate any donations from the community that I can get to help me offset those costs and, namely, to help fund some of the other things I would like to purchase to help me make my testing more efficient and accurate.

If you don’t mind helping out, you can use the link below to contribute to via PayPal (they take 3%, I’m OK with that):




If you don’t care about the rest of the details then there’s no need to read any further. However, if you’re interested in what your donations would be going toward, keep on reading…

I want to provide as much accurate information as I can about drive units, speakers and whatever miscellaneous ‘tasks’ I take on. IMHO, Klippel products will provide far more depth of knowledge than anything else and that’s why I’ve chosen their product(s). But I also want to keep my hobby/family balance. Testing takes up a good deal of time; but it's not so much the "test" as it is the setup/takedown time: cutting baffles, setting up the measurement rigs, getting the cabling out and running all the wires, fixing the driver/speaker to the test stand, and then writing up the report. In the time it takes to get prepped for a test I can complete another test cycle.

To help with accuracy and efficiency, I also hope to build a dedicated "test" space in my attic. I have about 11x17 feet that I'll need to floor, wall, and insulate to make it a test room. The reasons this is important to me are:
1) Scientifically speaking, the space would be large enough to push the first reflection out another 1 or 2 milliseconds which may not sound like much but is another 200hz or so of accuracy in my measurements. 200hz is a lot when you're expanding that over multiple octaves.
2) It gives me a fully repeatable environment to work within whereas my garage is a state of constant flux with temperature, humidity and ... stuff. Having a dedicated area means that the ambient conditions are within reason throughout the year but also it means that I won't have to spend hours setting up gear and taking it down to complete a couple tests which would help me complete more tests over time.
3) If I were to go this route I could also build an ‘infinite’ baffle to help with drive-unit testing.

Another thing that would help immensely is a small, tabletop, CNC. For raw driver testing I use a large baffle which has a cut-out for inserting smaller baffles. These smaller baffles are the pieces that the raw drivers are attached to. In my previous years of testing I didn't have the ability to surface mount complex drivers or oversized flange drivers. This was a detriment to my results (I always noted when that was the case). Surface mounting is the proper way to test drivers. I do own a router but the time it takes to cut flush-mount surfaces for some drivers … well, it adds up over time. Therefore, I would also like to purchase a small, table-top CNC router so I can cut my baffles to the exact dimensions needed for a driver cut-out. I've got my eye on an item that is just large enough to cut the baffle templates I need.

The third thing is having an automated turntable for polar measurements (on/off-axis frequency response). Now, I can build one from wood … I’ve done it before. But it’s a manual turning system which consists of: measure speaker, go turn speaker, measure speaker, go turn speaker… doing that in 5 to 10 degree increments over 90 to 180 degrees takes time. So, it would be really nice to use one that’s automated and works with the Klippel where I could click the run button and let it measure and rotate automatically. Again, this helps with repeatability and accuracy. But these are not cheap, either. I’ve gotten a couple quotes back > $3k. So, this is probably more of a pipedream at this point.

Obviously I wouldn’t be doing this if I didn’t enjoy it and feel like I’m learning from it as well so I’m not about to cry “woe, is me” here. But presenting data to the masses requires an extra level of accuracy and robustness that throwing together a simple test setup in my spare bedroom and caveating to the nth degree cannot provide; I know this from experience. So anything you can donate to help me with that would really and truly be appreciated.
Thanks again,
- Erin

















Original Post:
Many of you know that I used to do speaker/driver testing for a number of years for DIYMA before moving on to creating my own site (medleysmusings). I took the last couple years off due to personal reasons. But I'm gearing back up to do something big, at least for me. I’ve been itching to change things up and move my review format to YouTube and also expand out of raw driver testing and instead provide a wider range of information. So, that's what I'm doing.


The core of my efforts will focus on product reviews and tutorials (i.e., how to use a DSP, how to tune, what to listen for, etc) along with some other miscellaneous things. I will continue to provide objective data when I can/where it makes sense and I plan to do that as a supplement to the YouTube format; providing the data via a new website. I have a long list of ideas that I’ve collected over years. I think I have a few ideas for my reviews you all will really dig.


I have created a Facebook Group page for those who want to follow it. This page will be a way for me to update everyone on progress I make toward completing reviews. If I get a new piece of hardware to test I’ll share it. Links will be posted to reviews. That sort of stuff. It’ll be an extension of my YouTube review page because, frankly, it’s easier to support conversation here than it is on YouTube. Here’s the link: https://www.facebook.com/groups/607627396679113/


To be entirely transparent, I hope to be ad-driven at some point and also do some affiliate marketing (i.e., Amazon, Parts-Express, etc) so I can use some of the advertising revenue toward purchasing new test equipment and products to test/review. I don’t see me ever actually making money; breaking even would be nice. I’ve already sunk nearly a grand in to what I need to get going. In order to get to the point where I can monetize videos through YouTube, however, I’ll need to hit 1k subscribers, and some crazy number of hours viewed per month. So, I ask you all, if you are interested in any of the stuff I’ve done in the past or you just want to support what I’m doing, go ahead to my YouTube page and click the subscribe button. I don’t have anything out there at this moment in the way of reviews but I’m already working on some really, really cool stuff. And if you are interested in the items I review in the future, feel free to click any links I provide to my affiliate advertisers so I can get a small percentage of the purchase fee (hey, you were gonna buy it anyway). All that helps me keep this thing rolling and keep me from going in debt in the process.


Here’s a link to my YouTube page:
Erin's Audio Corner

And that’s it… I just ask you to bear with me. I’m not a video editor so I don’t expect to knock this stuff out of the park my first few attempts. But over time, with your feedback, I will hopefully improve the final product and provide an entertaining and educational set of videos. :)
Thanks,
Erin
 

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Subscribed! Looking forward to the content!

I'm sure I can't provide much in the way of technical help, but if you need someone to help "proof-read" some content to make it more accessible for your target audience send me a PM, I'd be happy to help.
 

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Erin. If you need and test gear or drivers to help with your YouTube project. Send me a message, I have scopes, meters ESR meters
And all kinds of stuff. Never know what I have that you could use. I also just bought a large 3d printer. Can print 300mm x 300mm x 400mm tall. Learning how this stuff works
Good luck on this. I’ve been thinking about doing something like this as well, but with my poor health, I’m not very reliable and consistent on a time fashion with doing things


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Where do I go to ask stupid questions about what midbass setup to use. Lol? Looking forward to it. Medley Musings was awesome and this sounds like it will be even better. And just today I was thinking people like Erin are going to start dropping since they have a great system and no reason to continue playing with car audio.
 

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I liked the BMX videos on your YouTube channel... brings back memories (waaaay back for me)
 

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Sweet following.
 

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Have always appreciated your work....just subscribed to your youtube channel!!!

Also have equipment for you to test if you ever want...DRZ9255 and various sound "enhancer"processors, including the RFQ5000, Fosgate Gavotte, and an ESP3
 

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Wow! Awesome news, Erin! :)

I can't think of a better person to do this. I've enjoyed watching some of Nick Apicella's videos as well as Peter @ PSsound, Dean & Fernando @ Five Star Car Stereo, some of Pete K's vids on HexiBase, and some of Danny Richie's vids on the New Record Day's "Tuesday Tech Talk" series, etc.

But I'm most excited because I know you'll bring a lot of great knowledge and especially objective info to the topics & reviews. You've obviously had a lot of first-hand experience with a lot of different products and setups, so that will add heaps of value to your content.

I think that your first video should be an "introductory" video (like your OP here), basically letting people know who you are, where you come from, and what your experience and background is, so that new subscribers in particular have a reference point.

Also outline (as you did here) what the main focus and topics will be, your M.O. and/or your mission statement...and where you'd like to take it in the future.

The most difficult part of creating and producing video content is the actual video and audio EDITING. It can be a huge time sinkhole. I think you'll find that the easy part is actually recording the content. :p

And I'm sure it's obvious, but one of the most important things in producing video content is the audio quality of dialog, etc... especially when your YouTube channel will be audio-centric in content. I've watched plenty of extremely knowledgeable "audio" guys get "burned at the stake'' and lose a lot of credibilty for having poor quality audio in their presentations and video content. :/

A great channel for reference & information in this area is the Curtis Judd YouTube channel.

I'll head over in a moment and subscribe to your YouTube channel and try to spread the word whenever I can. ;)

Looking forward to your success! THANKS!

EDIT: We need to start a GoFundMe campaign to get you an Audio Precision APx. :)
.
 

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Subscribed to YouTube channel and requested to join FB group.

Looking forward to seeing how this project develops! (y)
 

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Discussion Starter #12 (Edited)
I think that your first video should be an "introductory" video (like your OP here), basically letting people know who you are, where you come from, and what your experience and background is, so that new subscribers in particular have a reference point.

Also outline (as you did here) what the main focus and topics will be, your M.O. and/or your mission statement...and where you'd like to take it in the future.
Yep. That's the plan. Been working a script. I like shooting from the hip a lot but I am going to try to script some of these where necessary.

And I'm sure it's obvious, but one of the most important things in producing video content is the audio quality of dialog, etc... especially when your YouTube channel will be audio-centric in content. I've watched plenty of extremely knowledgeable "audio" guys get "burned at the stake'' and lose a lot of credibilty for having poor quality audio in their presentations and video content. :/
My mic(s) should be here tomorrow. Don't wanna give anything away there, though. ;)

EDIT: We need to start a GoFundMe campaign to get you an Audio Precision APx.
Dude. You have no idea. Over the past 10 years I have spent countless hours researching cost-efficient alternatives. Every two years I come back around to the idea but always wind up exiting it with the same result: no freaking way I can afford to do what I want to do. I see people making crude measurements but IMHO if you can't provide quality measurements then there's no sense bothering. As you seem to know, the AP units are an easy $4k used and most of those don't necessarily have the full suite of what I want. And the good ones are still in the thousands. Unfortunately, some of the options I thought would be more feasible are either still too limited (desktop DAC with software) or the quality just isn't there (QA), or there's no support (HP 8903 units). And that isn't even getting in to the power supply and resistor banks. I'm not gonna break myself for this hobby. I just wish I had a connection nearby that I could go to and conduct tests and then provide the data. I also looked in to the amp dyno but that's $3500 and doesn't even provide data such as FR, %THD over frequency, etc which would be nice to have if I'm paying that much. But, I do like that's it easy to set up and repeatable. I'd use one if I could afford it.

All this is just the tip of my brain dump. Just trust me when I say that if it were feasible for me to do it, I would. I'll leave it up to the team at AudioScienceReview to do that kind of stuff.

Edit: And TBH, the speakers and the room are infinitely more important than amplifiers when it comes to the playback system. I'd prefer to put my time in to areas that will be more beneficial to the community at large. I just don't see a legitimate benefit to plotting FR of an amplifier. Power tests, sure, to verify mfg specs. But. like speaker drivers, you learn who the legitimate companies are and you trust their specs. If they don't provide it then it's time to consider something else.
 

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Well if you need a Dayton test mic and a scope for stating out I’ll send you mine to get up and running, but I’m sure you have those anyway
GL


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Discussion Starter #15
Well if you need a Dayton test mic and a scope for stating out I’ll send you mine to get up and running, but I’m sure you have those anyway
GL


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Thanks for the offer. Very kind. :)

I do have a mic. However, I don't have a real scope. I do have the SMDD-1 thing and that works OK. But a scope with a voltage display is something I'd like to have at some point.
 

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Yep. That's the plan. Been working a script. I like shooting from the hip a lot but I am going to try to script some of these where necessary.
...
My mic(s) should be here tomorrow. Don't wanna give anything away there, though. ;)
...
All this is just the tip of my brain dump. Just trust me when I say that if it were feasible for me to do it, I would. I'll leave it up to the team at AudioScienceReview to do that kind of stuff.

Edit: And TBH, the speakers and the room are infinitely more important than amplifiers when it comes to the playback system. I'd prefer to put my time in to areas that will be more beneficial to the community at large. I just don't see a legitimate benefit to plotting FR of an amplifier. Power tests, sure, to verify mfg specs. But, like speaker drivers, you learn who the legitimate companies are and you trust their specs. If they don't provide it then it's time to consider something else.
??

I assume you have the new DATS v3? A CLIO rig would be nice as well. :)

If you haven't seen them already, check out the new Danish audio company, Purifi Audio. It's headed up by a serious group of engineers in both transducers/acoustics & amplifier electronics.

I'm looking forward to trying their new 6.5" (7") and 4'' drivers. Fairly impressive review with measurements on the PTT6.5W04-01A in HiFi Compass.

Purifi Audio Tech & Blog

HiFi Compass Test Review - Purifi PTT6.5W04-01A
 

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Edit: And TBH, the speakers and the room are infinitely more important than amplifiers when it comes to the playback system. I'd prefer to put my time in to areas that will be more beneficial to the community at large. I just don't see a legitimate benefit to plotting FR of an amplifier. Power tests, sure, to verify mfg specs. But. like speaker drivers, you learn who the legitimate companies are and you trust their specs. If they don't provide it then it's time to consider something else.
Thanks for this, I couldn’t give a damn if an amp makes 109 watts or 98 watts, or if there is a slight fluctuation in frequency response. Measuring amps would be a waste of your time and wouldn’t provide any real useful information, unless some particularly unique amps come into play.
 

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Discussion Starter #18 (Edited)
??

I assume you have the new DATS v3? A CLIO rig would be nice as well. :)

If you haven't seen them already, check out the new Danish audio company, Purifi Audio. It's headed up by a serious group of engineers in both transducers/acoustics & amplifier electronics.

I'm looking forward to trying their new 6.5" (7") and 4'' drivers. Fairly impressive review with measurements on the PTT6.5W04-01A in HiFi Compass.

Purifi Audio Tech & Blog

HiFi Compass Test Review - Purifi PTT6.5W04-01A
Nope. I don't have the v3. I have the v2, though. They're OOS on the v3 right now.

The CLIO is nice but I don't have the funds to buy it. Plus, I'd have to learn a new piece of hardware and software. I'll be using the UMIK-1 & REW for my purposes. It's sufficient. The OmniMic would be a nice-to-have from a simplicity POV. Shouldn't have sold my last one. I've also reached out to another manufacturer about some of their gear but most likely I won't be doing raw driver testing for a long time. If ever. It's a pain in the butt. I must have tested well over 100 drive units and the put-up/tear-down process for the whole measurement rig was a royal pain in the butt.

You mentioning the CLIO and DATS v3 and the part about the CLIO rig being nice ... are you doing driver tests as well? If so, and if you want a hand, shoot me a PM and I can give you my number and do a brain dump... everything from IEC baffles to measurement conditions and calculations; I'd be happy to hook you up with some stuff if it would help you. It would be cool if someone else wanted to take that over. There's only one site that does raw driver testing anymore. Been a few people to talk about it but no one has taken the mantle yet, though.

I saw your thread about the 6.5" but didn't know they were making a 4". I'll have to check that out. Looks promising.
 

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I’ll loan ya my mini DSP ears if you do a step by step tutorial on it if that sounds interesting to you.

I wanna understand how you create your own house curve based off it and specific gear. Haven’t had the time to really dig into it myself and confirm I’m even approaching it the best way.


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Nope. I don't have the v3. I have the v2, though. They're OOS on the v3 right now.

The CLIO is nice but I don't have the funds to buy it. Plus, I'd have to learn a new piece of hardware and software. I'll be using the UMIK-1 & REW for my purposes. It's sufficient. The OmniMic would be a nice-to-have from a simplicity POV. Shouldn't have sold my last one. I've also reached out to another manufacturer about some of their gear but most likely I won't be doing raw driver testing for a long time. If ever. It's a pain in the butt. I must have tested well over 100 drive units and the put-up/tear-down process for the whole measurement rig was a royal pain in the butt.

You mentioning the CLIO and DATS v3 and the part about the CLIO rig being nice ... are you doing driver tests as well? If so, and if you want a hand, shoot me a PM and I can give you my number and do a brain dump... everything from IEC baffles to measurement conditions and calculations; I'd be happy to hook you up with some stuff if it would help you. It would be cool if someone else wanted to take that over. There's only one site that does raw driver testing anymore. Been a few people to talk about it but no one has taken the mantle yet, though.

I saw your thread about the 6.5" but didn't know they were making a 4". I'll have to check that out. Looks promising.
You mean you didn't preorder the DATS v3? I've already tossed mine in a corner because it's so inconsistent from one sweep to the next. By not preordering, you may have to wait until all the bugs are worked out. :)
 
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